photoprism/internal/entity/photo_location.go

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package entity
import (
"time"
"github.com/photoprism/photoprism/internal/classify"
"github.com/photoprism/photoprism/internal/maps"
"gopkg.in/ugjka/go-tz.v2/tz"
)
// GetTimeZone uses PhotoLat and PhotoLng to guess the time zone of the photo.
func (m *Photo) GetTimeZone() string {
result := "UTC"
if m.HasLatLng() {
zones, err := tz.GetZone(tz.Point{
Lat: float64(m.PhotoLat),
Lon: float64(m.PhotoLng),
})
if err == nil && len(zones) > 0 {
result = zones[0]
}
}
return result
}
// CountryName returns the photo country name.
func (m *Photo) CountryName() string {
if name, ok := maps.CountryNames[m.CountryCode()]; ok {
return name
}
return UnknownCountry.CountryName
}
// CountryCode returns the photo country code.
func (m *Photo) CountryCode() string {
if len(m.PhotoCountry) != 2 {
m.PhotoCountry = UnknownCountry.ID
}
return m.PhotoCountry
}
// GetTakenAt returns UTC time for TakenAtLocal.
func (m *Photo) GetTakenAt() time.Time {
loc, err := time.LoadLocation(m.TimeZone)
if err != nil {
return m.TakenAt
}
if takenAt, err := time.ParseInLocation("2006-01-02T15:04:05", m.TakenAtLocal.Format("2006-01-02T15:04:05"), loc); err != nil {
return m.TakenAt
} else {
return takenAt.UTC()
}
}
// UpdateLocation updates location and labels based on latitude and longitude.
func (m *Photo) UpdateLocation(geoApi string) (keywords []string, labels classify.Labels) {
if m.HasLatLng() {
var location = NewLocation(m.PhotoLat, m.PhotoLng)
err := location.Find(geoApi)
if location.Place == nil {
log.Warnf("photo: location place is nil (uid %s, location %s) - bug?", m.PhotoUID, location.ID)
}
if err == nil && location.Place != nil && location.ID != UnknownLocation.ID {
m.Location = location
m.LocationID = location.ID
m.Place = location.Place
m.PlaceID = location.PlaceID
m.PhotoCountry = location.CountryCode()
if m.TakenSrc != SrcManual {
m.TimeZone = m.GetTimeZone()
m.TakenAt = m.GetTakenAt()
}
FirstOrCreateCountry(NewCountry(location.CountryCode(), location.CountryName()))
locCategory := location.Category()
keywords = append(keywords, location.Keywords()...)
// Append category from reverse location lookup
if locCategory != "" {
labels = append(labels, classify.LocationLabel(locCategory, 0, -1))
}
return keywords, labels
}
}
keywords = []string{}
labels = classify.Labels{}
if m.UnknownLocation() {
m.Location = &UnknownLocation
m.LocationID = UnknownLocation.ID
} else if err := m.LoadLocation(); err == nil {
m.Place = m.Location.Place
m.PlaceID = m.Location.PlaceID
} else {
log.Warn(err)
}
if m.UnknownPlace() {
m.Place = &UnknownPlace
m.PlaceID = UnknownPlace.ID
} else if err := m.LoadPlace(); err == nil {
m.PhotoCountry = m.Place.CountryCode()
} else {
log.Warn(err)
}
if m.UnknownCountry() {
m.EstimateCountry()
}
if m.HasCountry() {
FirstOrCreateCountry(NewCountry(m.CountryCode(), m.CountryName()))
}
return keywords, labels
}